BEAM PROPERTIES
Y
“C” purlins are roll formed from high strength hot dipped galvanized steel, conforming to ASTM Designation A653, Grade D, for Structural Quality Steel with a minimum yield strength of 50,000 psi, and G-90 galvanized coating.Sectional properties shown below were computed in strict accordance with the provision of The American Iron & Steel Institute's “Specifications for the Design of Cold-Formed Steel Structural Members", 1996 EDITION.
SECTION
Ga
H in
W in
DIMENSIONS L t in in
AREA
in 2
4 x 2.5 6 x 2.5
W L
X
WT Lbs/ft
H
Ixx in 4
PROPERTIES FOR BEAM Fb Rxx ksi in ksi in 3
R.M. Lbs-ft
V kips
28.85 44.38
5.77 3.889 7.40 4.578
13151 16930
10.30 9.70
METAL DECK & PURLINS DIVISION
“C” PURLINS
2.47
6 x 3.5 8 x 2.5 8 x 3.5
12 x 3.5
12 12
10 12
3.5 3.5
1.00 1.00
0.105 0.105
1.91 2.12
NOTES: BEAM STRENGTH: Properties shown for beam strength have been reduced, where required, to allow the use of the full allowable design stress in accordance with Section 2.3 of the Specifications. The allowable design stress Fb, is based on the basic design stress for flexural members and the allowable bending stress in webs determined in accordance with the provisions of Section 3 of the Specifications.
6.80 7.50
50 50
30 30
Ixx is the moment of inertia for deflection determination. Sxx is the section modulus reduced for load determination. DIMENSIONS: Thickness and area shown are those of bare steel exclusive of the galvanized coating.Weights listed for purlins are based on the weight of galvanized steel.
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10 x 3.5